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TWO DIFFERENT TYPES OF PHOTOCHEMISTRY IN PHYCOERYTHROCYANIN α‐SUBUNIT *
Author(s) -
Hong Qiang,
Zhao KaiHong,
Scheer Hugo
Publication year - 1993
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1993.tb04962.x
Subject(s) - photochromism , photochemistry , absorption (acoustics) , absorption spectroscopy , chemistry , isoelectric point , protein subunit , isoelectric focusing , materials science , optics , organic chemistry , biochemistry , physics , composite material , gene , enzyme
The photochemical activities of phycoerythrocyanin α‐subunits from Mastigocladus laminosus separated by isoelectric focusing were tested by irradiating at 500, 550, 577 and 600 nm. Two types of photoreversible photochromic responses have been characterized by absorption and absorption difference spectroscopy. Type I is the well‐known absorption shift from 571 to 506 nm. Type II is a new response characterized by a line‐broadening of the 570 nm absorption.